percentage saved = percentage change
percentage change = change in final and initial values divided by original value and then multiplied by 100
in short = change / original × 100
change = $500 - $ 325 = $175
so...... 175 / 500 × 100
= 0.35 × 100
= 35 %
percentage saved = 35 %
how to check if correct : 35/100 × 500 = 175